Evidence map›Paper›PMID 24962784›Full record

ArticleJournal of visualized experiments : JoVE2014

Automated analysis of dynamic Ca2+ signals in image sequences.

Michael Francis, Josh Waldrup, Xun Qian, Mark S Taylor

Abstract readVideo-Audio Media
In one paragraph

Article in Journal of visualized experiments : JoVE, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Long-Term Hypoxia Negatively Influences CaFrontiers in physiology · 2021
    Article
  7. Article
  8. Article
  9. Functional Interaction among KInternational journal of molecular sciences · 2019
    Review
  10. Hyperspectral imaging fluorescence excitation scanning spectral characteristics of remodeled mouse arteries.Proceedings of SPIE--the International Society for Optical Engineering · 2019
    Article
  11. Article
  12. Changes in vascular reactivity and endothelial CaMicrocirculation (New York, N.Y. : 1994) · 2017
    Article
  13. Endothelial SK3 channel-associated Ca2+ microdomains modulate blood pressure.American journal of physiology. Heart and circulatory physiology · 2016
    Article
  14. Article
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Michael FrancisDepartment of Pharmacology, University of South Alabama.
Josh WaldrupDepartment of Physiology, University of South Alabama.
Xun QianDepartment of Physiology, University of South Alabama.
Mark S TaylorDepartment of Physiology, University of South Alabama; mtaylor@southalabama.edu.

Funding

Coronary Artery Regulation by Small Conduction Ca2+-activated K+ ChannelsR01HL085887 · NHLBI · UNIVERSITY OF SOUTH ALABAMA · PI TAYLOR, MARK STEPHEN · 2007 to 2011
$1.3M
TRPV4 Initiates Ventilator Induced Lung InjuryR01HL092992 · NHLBI · UNIVERSITY OF SOUTH ALABAMA · PI PARKER, JAMES COURTNEY · 2009 to 2010
$711k
Request for a Spectral Confocal MicroscopeS10RR027535 · NCRR · UNIVERSITY OF SOUTH ALABAMA · PI RICH, THOMAS C · 2010 to 2010
$397k
NCRR NIH HHS S10 RR027535NCRR NIH HHS S10RR027535NHLBI NIH HHS HL-085887NHLBI NIH HHS HL-092992NHLBI NIH HHS R01 HL085887NHLBI NIH HHS R01 HL092992
6 · The paper itself

Abstract

Intracellular Ca(2+) signals are commonly studied with fluorescent Ca(2+) indicator dyes and microscopy techniques. However, quantitative analysis of Ca(2+) imaging data is time consuming and subject to bias. Automated signal analysis algorithms based on region of interest (ROI) detection have been implemented for one-dimensional line scan measurements, but there is no current algorithm which integrates optimized identification and analysis of ROIs in two-dimensional image sequences. Here an algorithm for rapid acquisition and analysis of ROIs in image sequences is described. It utilizes ellipses fit to noise filtered signals in order to determine optimal ROI placement, and computes Ca(2+) signal parameters of amplitude, duration and spatial spread. This algorithm was implemented as a freely available plugin for ImageJ (NIH) software. Together with analysis scripts written for the open source statistical processing software R, this approach provides a high-capacity pipeline for performing quick statistical analysis of experimental output. The authors suggest that use of this analysis protocol will lead to a more complete and unbiased characterization of physiologic Ca(2+) signaling.

Indexed as

AlgorithmsSignal Processing, Computer-AssistedAnimalsCalciumCalcium SignalingFluorescent DyesMicroscopy, FluorescenceSoftwareSwineCalciumFluorescent Dyes

Identifiers

PMID24962784
PMCPMC4195352

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.